M2.3 earthquake 4km ENE of Walnut Creek, CA

A magnitude 2.3 earthquake struck 4km ENE of Walnut Creek, CA on Thu, Jan 7, 2021, 5:52 AM PST (13:52 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 2km W of Concord, CA. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

28 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 71 in the 60 days after this one and 39 in the 30 days before it.

The first 60 of 71.

From the USGS Earthquake Hazards Program and its partner networks, event nc73507900. Read Sun, Oct 4, 2026, 8:48 AM UTC.